Star counts averaged among the healpix bins over the whole sky as a function of magnitude, in Gaia EDR3 (orange crosses) and Gaia DR2 (blue triangles), compared to GOG20 (black circles). Bottom: difference in counts between GOG20 and Gaia EDR3 over the whole sky (circles), excluding the Galactic plane (triangles), and excluding the Galactic plane and the Magellanic Clouds (crosses). The deficit in GOG20 at faint magnitudes is mainly due to the Magellanic Clouds as they are not included in the model.